Tory leader's hard disagreement on economy (6)
I believe the answer is:
thrift
'economy' is the definition.
(I've seen this before)
'tory leader's hard disagreement on' is the wordplay.
'tory leader' becomes 't' (I've seen this in other clues).
'hard' becomes 'h'.
'disagreement' becomes 'rift' (I've seen this in other clues).
'on' says to put letters next to each other.
't'+'h'+'rift'='THRIFT'
(Other definitions for thrift that I've seen before include "Economy, frugality" , "Economy - sea pink" , "Good husbandry" , "Maritime growth" , "Extreme care in spending money" .)